Computer mouse

ABSTRACT

A computer mouse used to control the monitor screen, having only two contacts (the minimum possible contacts). The spherical ball is in touch only with the coordinate shafts. The third contact, necessary for ball stability, is replaced with a magnet which will engage the ball with the coordinate shafts. The magnet will not touch the ball.

BACKGROUND OF THE INVENTION

[0001] 1. Field of the Invention

[0002] This invention refers to a computer mouse used to control themonitor screen.

[0003] 2. Prior Art Statement

[0004] The existing Mouse use a mechanical schematic with a rubber ballwhich will rotate the x and y coordinate shafts, as the Mouse is movedan a surface T. The spherical ball S is pressed against the x and yshafts with a wheel H. (FIG. 1).

[0005] The disadvantages of the existing Mouse are: low precision of themouse pointer on the screen, it will stuck often and the mouse needscleaning, especially the wheel H. The wheel H will create these problemsbecause of the higher friction with the ball, when it will move in aplane not perpendicular on it, and because it gets dirt from the surfaceT, on which the ball is moved. The ball S will not rotate smoothly.

OBJECT AND SUMMARY OF THE INVENTION

[0006] The object of this invention is to eliminates the disadvantagesof the existing mouse. In order to do this, the wheel H is eliminatedand the force necessary to press the ball against the coordinate shaftsx and y are created by a magnet M, which will attracted the ball S,without to touch it. The force created by the magnet M is in a planeparallel with the plane of the shafts x and y. The ball S will rotatesmoothly and the mouse pointer on the screen has higher precision.

BRIEF DESCRIPTION OF THE DRAWINGS

[0007] The description is related with the FIGS. 1 and 2, whichrepresent:

[0008]FIG. 1. The mechanical schematic of a existing mouse.

[0009]FIG. 2. The mechanical schematic according with this invention.

DESCRIPTION OF THE INVENTION

[0010] In FIG. 2 the wheel H is replaced with a magnet M, which willcreate the force F, necessary to press the ball S against the x and ycoordinate shafts. The mouse case will create a inclosure for mouse sowhen the mouse is moved on the surface, the ball S will touch, inside ofthe mouse only the shafts x and y. The ball has magnetic core.

We claim:
 1. A computer mouse having the rotatable ball with twocontacts inside of it, comprising: a magnet which attracts the mousemagnetic core ball and rubber outer layer, without touching the ball,against the coordinates x and y shafts, in a plane parallel with theshafts x and y plane.